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The 330905-00-25-05-12-CN is primarily used for areas where counterbore, sideview, or rearview restrictions limit the use of standard Bently Nevada 3300 and 3300 XL 5 mm and 8 mm Transducer Systems. It is also ideal for small target applications, such as measuring radial vibration on shafts smaller than 51 mm (2 inches) or axial position on flat targets smaller than 15 mm (0.6 inches).
Axial (thrust) position measurements
Phase reference (Keyphasor signals)
Tachometer and zero speed measurements
The 3300 XL NSv Proximity Transducer system is intended for use with centrifugal air compressors, refrigeration compressors, process gas compressors, and other machines with tight installation requirements.The 3300 XL NSv Proximitor Sensor has similar features to those found in the 3300 XL 8 mm Proximitor Sensor.
Its thin design allows the user to mount it in either a high-density DIN-rail installation or a more traditional panel mount configuration. Improved RFI/EMI immunity allows the 3300 XL NSv Proximitor Sensor to achieve European CE mark approvals without any special mounting considerations. This RFI immunity also prevents nearby high frequency radio signals from adversely affecting the transducer system. SpringLoc terminal strips on the Proximitor Sensor require no special installation tools and facilitate faster, highly robust field wiring connections.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Bently Nevada 330905-00-25-05-12-CN Proximity Probe Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Air Separation
Installed in compact centrifugal air compressors to monitor small-diameter shaft radial vibration and axial displacement under limited internal spacing.
Petrochemical & Fine Chemicals
Placed on high-speed process gas compressors to transfer proximity metrics while the FluidLoc cable stops chemical lubricants from migrating along the wire.
Thermal Power
Embedded into small-scale boiler feed pumps or lubricating oil pumps to provide non-contact vibration feedback within tight bearing housings.
Automotive
Deployed on plant-wide factory air supply compressors to map rotor runout and support predictive maintenance schedules over long operation periods.
Pharmaceutical
Utilized in high-speed centrifuges and mixers to track spindle radial runout, ensuring mechanical integrity complies with safety regulations.
Pulp & Paper
Used on auxiliary chemical dosing pumps to monitor small shaft displacement while maintaining physical resistance against moisture and vapor.
When operating the 330905-00-25-05-12-CN compact probe, you must precisely adjust the initial gap voltage within the center of the narrow NSv linear range using a multimeter, strictly avoid over-bending the cable when routing through tight spaces like counter-bores while maintaining a completely oil-sealed ClickLoc gold-plated connector, and finally, since it carries the -CN China National Explosion-proof Certification, you must strictly adhere to national intrinsically safe explosion-protection installation codes when mounting and wiring in hazardous areas to prevent safety validation failure.
The 330905-00-25-05-12-CN is a 3300 NSv eddy current proximity probe specifically developed for confined spaces and small shaft applications. Its mechanical and electrical characteristics are fully compatible and directly interchangeable with the previous generation 3300 RAM probes, while offering significantly enhanced chemical resistance for wide deployment in various process compressor environments. The probe features superior narrow-view side-view characteristics that effectively reduce electromagnetic interference from surrounding counterbore walls. Physically, it utilizes an M10 x 1 metric unarmored threaded case, with the entire system standardly equipped with gold-plated brass ClickLoc twist-lock coaxial connectors to prevent loosening caused by vibration. It also integrates patented TipLoc molding for robust tip-to-body bonding and CableLoc technology providing 220 Newtons of pull strength. Furthermore, it is officially recommended to install dedicated connector protectors at the probe-to-extension cable and cable-to-Proximitor Sensor connections to physically block liquid ingress, ensuring long-term stability of the RF electrical signal and eliminating reading drift.
It is a high-precision 3300 NSv eddy current proximity probe manufactured by Bently Nevada, designed for non-contact measurement of shaft vibration and axial displacement in small rotating machinery with tight space constraints.
What is the main design advantage of the 330905-00-25-05-12-CN "NSv" system?
"NSv" stands for Narrow View. This design is optimized for applications where counterbore restrictions, rearview, or sideview limits prevent the use of standard 5mm or 8mm probes, allowing accurate readings in confined spaces.
How to correctly install and use the 330905-00-25-05-12-CN probe?
It must be thread-mounted via its M10x1 body into the machine housing, adjusted to the recommended electrical gap setting using a multimeter, and connected to a dedicated 3300 XL NSv extension cable and Proximitor sensor.
Can 330905-00-25-05-12-CN be mixed with standard 3300 XL 8mm system components?
No. The electrical properties and calibration of the NSv system are completely different from the 8mm system. It must be paired exclusively with 3300 XL NSv extension cables and Proximitor sensors.
What materials are used to construct the body of 330905-00-25-05-12-CN?
The probe tip is molded from high-strength Polyphenylene Sulfide (PPS), and the threaded case is machined from corrosion-resistant AISI 304 stainless steel (SST).
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